 Haydn would have been about 52 at the time, Mozart about 28.Jens Peter Larsen suggests that "quartet playing was central to the contact between Haydn and Mozart", although the documentation of the occasions in which the two composers played or heard quartets or other chamber music together is slim.One report of such an occasion comes from the "Reminiscences" (1826) of the Irish tenor Michael Kelly, who premiered Mozart's most important operatic lyric tenor roles.